1. Vertical machining center

Vertical machining center , cnc for short , is an automatic machine tool composed of mechanical equipment and numerical control system used for machining complex shape workpieces. Vertical machining center is also called computer gong. The machining center is equipped with a tool magazine and has the function of automatic tool change. It is a CNC machine tool that performs multi-process processing after clamping the workpiece at one time. The machining center is a highly mechatronic product. After the workpiece is clamped, the CNC system can control the machine tool to automatically select, replace the tool, automatically set the tool, automatically change the spindle speed, feed, etc. according to different procedures, and can continuously complete drilling, boring, Milling, reaming, tapping and other processes, thus greatly reducing the workpiece clamping time, measurement and machine tool adjustment and other auxiliary process time, the processing shape is more complex, the precision requirements are high, and the variety is frequently replaced. What are the pain points encountered in vertical processing?

1. Winding and efficiency

Due to the long cooling time and temperature rise of the tool and workpiece, the external cooling method directly leads to low working efficiency, and the processing efficiency will drop by 75% under the same working conditions . Trouble with the low-pressure coolant with external cooling. During the drilling process, since the coolant cannot reach the inside of the hole, the iron filings cannot be discharged smoothly if the pressure is not enough, and it is very easy to interfere with the probe when it is wrapped around the drill bit to change the tool, resulting in probe detection. Broken needle.  

2. The rotary joint is damaged

Rotary joint damage Improve rotary joint life When there is no pre-filter, the high-pressure coolant goes directly to the machine tool rotary joint, and impurities in the coolant can damage the rotary joint seal, resulting in damage to the rotary joint. After adding a pre-filter, the filtration accuracy is 25μm , which has met the working conditions of the rotary joint, thereby increasing the service life of the rotary joint.

3. Probability of filter clogging

Blockage probability 80%	Blockage probability 50%	Blockage probability 30%

Second , lathe processing

Lathe processing is a part of mechanical processing, and there are mainly two processing forms : one is to fix the turning tool to process the unformed workpiece in rotation ; the other is to fix the workpiece, and through the high-speed rotation of the workpiece, the turning tool ( tool holder ) ) horizontal and vertical movement for precision machining .   

Will you encounter these troubles during lathe processing?

1. Iron filings winding  

In the process of lathe machining, the iron filings are very long, and they are always entangled on the workpiece and the tool during the machining process, which affects the smoothness of the workpiece and reduces the service life of the tool. condition, which seriously affects the processing efficiency.

2. The robot cannot work smoothly

In the process of lathe automatic assembly line processing, the workpiece is entangled by iron filings, and the truss robot cannot properly clamp the workpiece due to the influence of the iron filings, resulting in repeated clamping and thus stop working. The black light workshop and Industry 4.0 are directly linked to the degree of automation. Not working properly is the biggest stumbling block for Industry 4.0 .

Tool cooling

High pressure and high flow are a major wear mechanism in most carbide tool machining, and the cutting length increases with wear.

In either case, when the tool tip wear reaches 0.38-0.4mm , the cutting will be out of control. Although sometimes the wear reaches 0.76mm , the cutting can still be controlled, but the high-pressure cooling technology does not appear to be out of control in the machining process. In practice, these two factors can improve the contact between the chip and the coolant and the spread of energy because of the higher pressure and higher flow. Affected by the pressure and the angle of the water outlet, the contact length of the iron filings and the tool is reduced, and less heat is generated due to friction. The results show that the reduction of external cooling can reduce tool life by 200% and increase tool life ;